EXOTIC BIRCH-LEAFMINING SAWFLIES (HYMENOPTERA: TENTHREDINIDAE) IN ALBERTA: DISTRIBUTIONS, SEASONAL ACTIVITIES, AND THE POTENTIAL FOR COMPETITION

1997 ◽  
Vol 129 (2) ◽  
pp. 319-333 ◽  
Author(s):  
Scott C. Digweed ◽  
John R. Spence ◽  
David W. Langor
Keyword(s):  
Urban Trees ◽  
Seasonal Activity ◽  
Mature Trees ◽  
Sticky Traps ◽  
Rural Location ◽  
Three Generations ◽  
Complete Representations ◽  
Fenusa Pusilla ◽  
Profenusa Thomsoni ◽  
Southern Alberta

AbstractThe exotic birch-leafmining sawflies Fenusa pusilla (Lepeletier), Profenusa thomsoni (Konow), and Heterarthrus nemoratus (Fallen) occurred in Alberta during 1992–1995, but only the first two were abundant. Birch-leafmining sawflies occurred at all sites surveyed in central and southern Alberta, and appeared to be expanding their ranges northward. Adult F. pusilla began emerging in mid-May (approximately 220 DD05), and there were one to three generations per year, depending on location and year. Female F. pusilla were relatively less abundant on young than on mature trees. Profenusa thomsoni began attacking trees in June (between 400 and 550 DD05), and was invariably univoltine. Both species were more abundant and were active earlier on urban trees than at a nearby rural location. The highest catches and most complete representations of seasonal activity were obtained using yellow sticky traps. Larval F. pusilla and P. thomsoni are unlikely to compete directly for leaf resources because their leafmining activities are separated spatially and temporally, but they probably compete intraspecifically.

Functional diversity and seasonal activity of dung beetles (Coleoptera: Scarabaeoidea) on native grasslands in southern Alberta, Canada

2013 ◽  
Vol 146 (3) ◽  
pp. 291-305 ◽  
Author(s):  
N. Kadiri ◽  
J.-P. Lumaret ◽  
K.D. Floate
Keyword(s):  
Functional Diversity ◽  
Life History Traits ◽  
Dung Beetles ◽  
Total Biomass ◽  
Seasonal Activity ◽  
European Origin ◽  
Core Species ◽  
Native Grasslands ◽  
Native Grassland ◽  
Southern Alberta

AbstractTo characterise their functional diversity and seasonal activity, dung beetles (Coleoptera: Scarabaeoidea) were collected with baited pitfall traps at three sites for three years on a native grassland in southern Alberta, Canada. The total collection of 125 820 beetles comprised 12 species of which eight were of European origin. For each combination of site and year, assemblages were dominated by two or three core species of European origin that represented 70–95% of total beetles and more than 75% of total biomass, but only 10–30% of species richness. Core species consistently includedOnthophagus nuchicornis(Linnaeus) and occasionallyChilothorax distinctus(Müller) andColobopterus erraticus(Linnaeus). Coexistence of these core species appears to be facilitated by differences in their size, seasonal activity, and life history traits.

The use of sex pheromone lures to compare pear and apple leafcurling midge phenology

2013 ◽  
Vol 66 ◽  
pp. 270-273
Author(s):  
D.R. Wallis ◽  
P.W. Shaw
Keyword(s):  
Sex Pheromone ◽  
Gall Midge ◽  
Leaf Damage ◽  
Seasonal Activity ◽  
Monitoring Tool ◽  
Mature Trees ◽  
The Family ◽  
Synthetic Sex Pheromone ◽  
Set Up ◽  
Considerable Damage

Pear leafcurling midge (Dasineura pyri PLCM) is a gall midge in the family Cecidomyiidae and is a persistent pest in New ZealandWhilst mature trees can withstand considerable damage feeding by larvae can cause severe distortion (galling) of developing leaves on younger trees Apart from obvious leaf damage PLCM activity is difficult to detect so the recent development of the synthetic sex pheromone provides a useful monitoring tool for this pest Pear leafcurling midge pheromone traps were set up in four commercial pear blocks across the Nelson district which is the main commercial peargrowing area in New Zealand to assess the ability of the pheromone lure to monitor seasonal activity of the pest Trapping results are compared and discussed in relation to apple leafcurling midge activity in five apple blocks in the same region

SEASONAL ACTIVITY OF DUNG BEETLES (COLEOPTERA: SCARABAEIDAE) ASSOCIATED WITH CATTLE DUNG IN SOUTHERN ALBERTA AND THEIR GEOGRAPHIC DISTRIBUTION IN CANADA

1998 ◽  
Vol 130 (2) ◽  
pp. 131-151 ◽  
Author(s):  
K.D. Floate ◽  
B.D. Gill
Keyword(s):  
British Columbia ◽  
Exotic Species ◽  
Geographic Distribution ◽  
Native Species ◽  
Dung Beetles ◽  
Cattle Dung ◽  
Individual Species ◽  
Western Canada ◽  
Seasonal Activity ◽  
Southern Alberta

AbstractDung beetles (Scarabaeidae) were pitfall trapped at two sites in southern Alberta from 1993 to 1995. A 3-year total of 156 500 specimens representing 17 species was collected. Local assemblages were dominated, in descending order, by the exotic species Onthophagus nuchicornis (Linné), Aphodius prodromus (Brahm), Aphodius distinctus (O.F. Müller), and Aphodius fimetarius (Linné). Aphodius vittatus Say was the most common native species. Although adults were collected from mid-March to mid-November, the activity of individual species either peaked in the spring and again in the fall, or peaked once in spring to midsummer. Maps showing the Canadian distributions for 15 of these species were compiled from examination of collections and published records and identify 10 new provincial records. Most distributions are transcontinental, with the distribution of O. nuchicornis likely expanding only in the last 20–30 years to include Alberta and Saskatchewan. Aphodius erraticus (Linné) and Aphodius ruricola Melsheimer have not been previously reported from British Columbia. Aphodius pinguellus W.J. Brown, Canthon praticola LeConte, and Aphodius coloradensis Horn are restricted to western Canada.

The Bionomics of Profenusa thomsoni (Konow) (Hymenoptera: Tenthredinidae) a Leaf-Mining Sawfly on Betula spp

1960 ◽  
Vol 92 (5) ◽  
pp. 376-384 ◽  
Author(s):  
J. Lynton Martin
Keyword(s):  
Leaf Miner ◽  
Southern Ontario ◽  
Leaf Mining ◽  
Fenusa Pusilla ◽  
Profenusa Thomsoni ◽  
The Common

Infestations of Profenusa thomsoni (Konow) have occurred throughout most of northeastern, central, and southern Ontario since 1948 (Sippell, MacDonald, and Wallace, 1956), but before 1955 (Lindquist, 1955), its presence was not recognized because it was confused with the common birch leaf miner, Fenusa pusilla (Lep.).

scholarly journals UCC Open Arboretum Project: Trees as a teaching and outreach tool for environmental and plant education

2019 ◽  
Author(s):  
Alidair A. Griffin ◽  
◽  
Barbara Doyle Prestwich ◽  
Eoin P. Lettice ◽  
◽  
...  
Keyword(s):  
High School Students ◽  
Animal Species ◽  
Science Curriculum ◽  
Biodiversity Loss ◽  
Urban Trees ◽  
Knowledge Gain ◽  
School Students ◽  
Mature Trees ◽  
Global Issues ◽  
Tree Collection

The University College Cork (UCC) Open Arboretum Project aims to re-imagine the original purpose of the University’s tree collection – as a teaching tool. The arboretum represents a unique on-campus learning space which has been under-utilised for teaching in recent times. The arboretum has the capacity to engage students, staff and visitors in a tangible way with important global issues (e.g. the climate emergency and biodiversity loss). It is also an opportunity to combat ‘plant blindness’, i.e. the ambivalence shown to plants in our environment compared to often charismatic animal species. Wandersee and Schussler (1999) coined the term “plant blindness” to describe the preference for animals rather than plants that they saw in their own biology students. Knapp (2019) has argued that, in fact, humans are less ‘plant blind’ and more ‘everything-but-vertebrates-blind’ with school curricula and television programming over-emphasising the role of vertebrates at the expense of other groups of organisms. Botanic gardens and arboreta have long been used for educational purposes. Sellman and Bogner (2012) have shown that learning about climate change in a botanic garden led to a significant shortterm and long-term knowledge gain for high-school students compared to students who learned in a classroom setting. There is also evidence that learning outside as part of a science curriculum results in higher levels of overall motivation in the students and a greater feeling of competency (Dettweiler et al., 2017). The trees in the UCC collection, like other urban trees also provide a range of benefits outside of the educational sphere. Large, mature trees, with well-developed crowns and large leaf surface area have the capacity to store more carbon than smaller trees. They provide shade as well as food and habitats for animal species as well providing ‘symbolic, religious and historic’ value in public common spaces. Such benefits have recently been summarised by Cavender and Donnolly (2019) and aligned with Sustainable Development Goal 11, Sustainable Cities and Communities by Turner-Skoff and Cavender (2019). A stakeholder survey has been conducted to evaluate how the tree collection is currently used and a tour of the most significant trees in the collection has been developed. The tour encourages participants to explore the benefits of plants through many lenses including recreation, medicine and commemoration. The open arboretum project brings learning beyond the classroom and acts as an entry point for learning in a variety of disciplines, not least plant science and environmental education generally.

SEASONAL ACTIVITY OF THE BIRCH SKELETONIZER, BUCCULATRIX CANADENSISELLA CHAMBERS (LEPIDOPTERA: LYONETIIDAE), IN ALBERTA

1998 ◽  
Vol 130 (5) ◽  
pp. 579-582 ◽  
Author(s):  
Scott C. Digweed
Keyword(s):  
Seasonal Activity ◽  
Profenusa Thomsoni

AbstractThe birch skeletonizer Bucculatrix canadensisella Chambers was univoltine in central Alberta in 1992 and 1993. Adults occurred from early June until the end of July, and larvae were present from early July on, co-occurring with larvae of the ambermarked birch leafminer, Profenusa thomsoni (Konow). Larval B. canadensisella densities were higher in 1992 than in 1993, and were higher on rural trees at George Lake than on urban ones in Edmonton.

scholarly journals Control of Red Elm Bark Weevil (Magdalis armicollis) in American Elm (Ulmus americana) by Trunk Injection of Azadirachtin

2012 ◽  
Vol 38 (6) ◽  
pp. 255-257
Author(s):  
Michael Booth ◽  
Mark Goettel
Keyword(s):  
Early Summer ◽  
Management Tool ◽  
Effective Management ◽  
Mature Trees ◽  
Sticky Traps ◽  
Ulmus Americana ◽  
Breast Height ◽  
American Elm ◽  
Tree Canopies ◽  
Trunk Injection

Trunk injection of azadirachtin into elm trees (Ulmus americana) using the Ecoject™ Microinjection System to reduce emergence numbers of red elm bark weevil (Magdalis armicollis) was evaluated. Twelve mature trees were each injected with TreeAzin™ in early August 2010 at a rate of 16 ml per 15.2 cm trunk circumference at breast height. The following year, weevil activity was monitored at weekly intervals for four weeks using sticky traps placed in the canopies. There was a significant reduction of 55%–60% in weevil activity in early summer in the treated tree canopies as compared to the control, suggesting that this method may be an effective management tool for this pest.

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